Scientists warn that the virus could mutate into a much deadlier form.
科学家们警告，该病毒可能变异成更致命的形式。
More time on lower quality roads also makes for a deadlier transport network.
人民耗费更多的时间在低质量道路上，这更加剧了交通网络的死寂程度。
More time on lower quality roads also makes for a deadlier transport network.
人民耗费更多的时间在低质量道路上，这更加剧了交通网络的死寂程度。
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